Critical Reasoning

When storing Renaissance oil paintings, museums conform to standards that call for careful control of the surrounding temperature and humidity, with variations confined within narrow margins. Maintaining this environment is very costly, and recent research shows that even old oil paint is unaffected by wide fluctuations in temperature and humidity. Therefore, museums could relax their standards and save money without endangering their Renaissance oil paintings.

Which of the following is an assumption on which the argument depends?

A. Renaissance paintings were created in conditions involving far greater fluctuations in temperature and humidity than those permitted by current standards.
B. Under the current standards that museums use when storing Renaissance oil paintings, those paintings do not deteriorate at all.
C. Museum collections typically do not contain items that are more likely to be vulnerable to fluctuations in temperature and humidity than Renaissance oil paintings.
D. None of the materials in Renaissance oil paintings other than the paint are vulnerable enough to relatively wide fluctuations in temperature and humidity to cause damage to the paintings.
E. Most Renaissance oil paintings are stored in museums located in regions near the regions where the paintings were created.

In case of Assumption questions, we can apply denial test. Would any expert explain how the denial test work in this CR?
Thanks.

Refer this thread:
https://www.beatthegmat.com/old-paintings-t54846.html

hardik.jadeja wrote:Refer this thread:
https://www.beatthegmat.com/old-paintings-t54846.html

Thanks for the reference.

Before posting this one, I have seen the referred post. I know the answer, and I can get the answer. My question is how to apply negation test in ASSUMPTION questions.

Any expert?

Thanks.

gmat_perfect wrote:When storing Renaissance oil paintings, museums conform to standards that call for careful control of the surrounding temperature and humidity, with variations confined within narrow margins. Maintaining this environment is very costly, and recent research shows that even old oil paint is unaffected by wide fluctuations in temperature and humidity. Therefore, museums could relax their standards and save money without endangering their Renaissance oil paintings.

Which of the following is an assumption on which the argument depends?

D. None of the materials in Renaissance oil paintings other than the paint are vulnerable enough to relatively wide fluctuations in temperature and humidity to cause damage to the paintings.
.
In case of Assumption questions, we can apply denial test. Would any expert explain how the denial test work in this CR?
Thanks.

The opposite of the word none is some. Negate D and you get:

Some of the materials in Renaissance oil paintings other than the paint are vulnerable enough to relatively wide fluctuations in temperature and humidity to cause damage to the painting.

If some of the materials in the oil paintings are vulnerable to damage, the argument falls apart.

IMO - D